Wastewater Data Quality

Gradient assessed the reliability of benzene results reported by a petroleum company in support of its process wastewaters regulated under NESHAP. We examined all underlying quality control practices; as well as the representativeness of the sampling program. Our investigation found two cases of fraudulent instrument calibration by two different laboratories. Gradient's analysis helped lead to a settlement between the parti

Project Highlights

  • Data integrity
  • Laboratory fraud
  • Benzene
  • NESHAP